volume 39 issue 1 (january to june 2005) : 45 - 48
TOTAL DETERMINATION OF CALVING INTERVAL BY PATH ANALYSIS IN SAHIWAL CATTLE
1Dairy Cattle Breeding Division
National Dairy Research Institute, Kamal - 132 001, India
Published In
Indian Journal of Animal Research
Article Metrics
0
Views
0
Citations
Reviewed By
In this Article
APC
APC cover the cost of turning a manuscript into a published manuscript through peer-review process, editorial work as well as the cost of hosting, distributing, indexing and promoting the manuscript.
Publish With US
Submit your manuscript through user friendly platform and acquire the maximum impact for your research by publishing with ARCC Journals.
Become a Reviewer/Member
Join our esteemed reviewers panel and become an editorial board member with international experts in the domain of numerous specializations.
Open Access
Filling the gap between research and communication ARCC provide Open Access of all journals which empower research community in all the ways which is accessible to all.
Products and Services
We provide prime quality of services to assist you select right product of your requirement.
Support and Policies
Finest policies are designed to ensure world class support to our authors, members and readers. Our efficient team provides best possible support for you.
volume 39 issue 1 (january to june 2005) : 45 - 48
TOTAL DETERMINATION OF CALVING INTERVAL BY PATH ANALYSIS IN SAHIWAL CATTLE
1Dairy Cattle Breeding Division
National Dairy Research Institute, Kamal - 132 001, India
ABSTRACT
Based on 1068 observations of Sahiwal cattle for a period of 23 years (1980-2002)
maintained at National Dairy Research Institute, Kamal, the calving .interval was found to be
408.20±3.68 days with service period of 123.73±3.64 days, gestation period of 285.64±
0.44 days, lactation length of 254.25±3.79 days and dry period of 133.58±4.22 days based
on all lactations. The path analysis of calving interval by taking reproductive components revealed
that service period (99.5%) explained the maximum variability, whereas the effect of gestation
period was almost nil. .The total effect of service period was almost completely due to its direct
effect. By taking the productive components of calving interval, the dry period was found to
have more effect than lactation length. The total effects of dry period and lactation length were
28.78 and 13.68 per cent, respectively, for all lactations. Both the traits contributed mainly by
their direct effects.
maintained at National Dairy Research Institute, Kamal, the calving .interval was found to be
408.20±3.68 days with service period of 123.73±3.64 days, gestation period of 285.64±
0.44 days, lactation length of 254.25±3.79 days and dry period of 133.58±4.22 days based
on all lactations. The path analysis of calving interval by taking reproductive components revealed
that service period (99.5%) explained the maximum variability, whereas the effect of gestation
period was almost nil. .The total effect of service period was almost completely due to its direct
effect. By taking the productive components of calving interval, the dry period was found to
have more effect than lactation length. The total effects of dry period and lactation length were
28.78 and 13.68 per cent, respectively, for all lactations. Both the traits contributed mainly by
their direct effects.
KEYWORDS
REFERENCES
- Banik, S. and Tomar, 5.5. (2003). Indian J. Anim. Res., 37(1): 19-23.
- Snedecor, G.w. and Cochran, w.G. (1967). Statistical Methods. Oxford and IBH Publication Co. Calcutta.
- Tomar, 5.5. (2000). In: Compendium of Lectures. National Training Programme on Applied Statistical Methodology with Computer Orientation in Animal Breeding, February 10 to March I, (2000). Dairy Cattle Breeding Division, NDRI, Kamal, India.
- Wright, S. (1921). J. AgriJ. Res., 20: 357-385
Disclaimer :
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Copyright :
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In this Article
APC
APC cover the cost of turning a manuscript into a published manuscript through peer-review process, editorial work as well as the cost of hosting, distributing, indexing and promoting the manuscript.
Publish With US
Submit your manuscript through user friendly platform and acquire the maximum impact for your research by publishing with ARCC Journals.
Become a Reviewer/Member
Join our esteemed reviewers panel and become an editorial board member with international experts in the domain of numerous specializations.
Open Access
Filling the gap between research and communication ARCC provide Open Access of all journals which empower research community in all the ways which is accessible to all.
Products and Services
We provide prime quality of services to assist you select right product of your requirement.
Support and Policies
Finest policies are designed to ensure world class support to our authors, members and readers. Our efficient team provides best possible support for you.
Published In
Indian Journal of Animal Research